Carpet cleaning machine



FIG. 1 is a left side elevational view of a carpet cleaning machine showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof; and

FIG. 5 is a top elevational view thereof.

FIG. 6 is a front perspective view thereof. 

The ornamental design for a carpet cleaning machine, as shown. 